Compressible-pile regulator



A. W. DONOP. COMPRESSIBLE PILE REGULATOR. APPLICATION FILED MAR.26. 1919.

1,417,1 51. Patented ay 23, 1922.

I TNESS IN V EN TOR. W

[UNITED STATES T ToFF-ica .Aueus'r w. DONOP, or SAN FRANCISCO. ontironnin, asslenon TO U. s. LIGHT &

HEAT CORPORATION, OF. NIAGARA FALLS, NEW YORK, A CORPORATI ON YORK.

conrrnEssmLn-Pnn nEGnLATon.

OF NEW Specification of Letters Patent. Patented Ma .23 1922 Application filed March 26, 1919. Serial No. 285,383.

To all whom c't'mag concern:

Be it known that I, Aueus'r W. Donor, a citizen of the United States, residing at 1086 Post St, San Francisco, in the county of San Francisco and State of California, have invented. new and useful Improvements in Compressible-Pile Regulators, of which the following is a specification.

The present invention relates to compressible pile regulators.

More particularly the present invention relates to regulators wherein the pressure gagement with said plates exerted upon the compressible pile is varied to vary the resistance of said pile. In many devices of this nature, difficulty has been encountered for the reason that the discs of which such piles are commonly made up, do not loosen as desired when pressure is released.

An object of the present invention is to provide a compressible pile with operating means therefor in which the plates will be loosened when pressure is released.

A further object is to provide a construc tion which is sturdy and cheap to manufacture.

Other objects will be apparent as the decription proceeds.

The one figure of the drawing represents a sectional view illustrating one embodiment of the present invention. Briefly stated, the

invention comprises a series of conducting plates of compressible material such as carbon, which are mounted in contact with one another upon a rod having frictional en- Means are provided for tightly compressing said plates when it is desired to reduce the resistance of the compressible pile to a minimum. The rod, by frictional engagement with the several plates of the pile, loosens said plates from one another. I

The compressible pile is indicated by the numeral 1, said pile being made up ofa number of plates 2, 2. Each one of the plates 2, 2 is preferably provided with a perforation 3. The discs are mounted upon a rod l which extends through the perforations. As illustrated in the drawings, the

thrust plate 5 maybe held by the nut 6 which has engagement with a screw-threaded portion '7 on the rod 1. Said thrust plate .5 is adapted to exert pressureupon one end of the pile 1.

A pair of supporting members 8, 9 are provided which serve to support the rod 4 and also to support a magnetic core 10 upon which is mounted a solenoid 11.. Pivotally supported by the supporting member 9 is a lever 12 pivoted at the point 13. One end ofsaid lever 12 is provided with an armature 14;, while the other end 15 of said lever 12 is adapted to contact with one end of the rod 4. The screw-threaded end 7 of the rod l: may be provided with a bushing 16 to provide a bearing whereby said rod 1 may slide freely. The other end of the rod 4 has a bearing in the supporting member 8. A

spring 17 may be provided for biasing the lever 12 to urge the rod 4 toward the left as viewed in the drawing, whereby the thrust plate 5 will compact the compressible pile 1.

A mode of operation of the above-described embodiment of the invention is substantially as follows: The solenoid 11 may be connected to any circuit to the functions of which it should respond. The compressible pile 1 may be connected intheycircuits whose resistance it is desired to vary. Action of the spring 17 will tend to compact the pile 1 to reduce the resistance of same to a minimum. Energization of the solenoid 11 will result in an attraction of armature 14. When said solenoid 11 has been energized to a predetermined extent, its attraction will result in the movement of lever 12 in a clockwise direction, thereby relieving pressure on the compressible pile 1.- The plates, being relieved from a state of compression, will move the thrust plate 5 toward the right as viewed in the drawing,.which in turn will move the rod 4 toward the right. The rod 4, 011 account of its frictional engagement with the several plates of the pile, will loosen said plates from one another, whereby there will be a uniform increase in the resistance of thepile throughout its length.

The contour of the plates 2, 2 and of the rod 4 may be varied as desired. Many other modifications may be made. It is intended in this patent to cover all such modifications that fall within the scope of the invention as defined by the appended claims.

WVhat I claim as new and desire to secure by Letters Patent of the United States isii. In a compressible pile a plurality of plates and operating means for said pile 5 having frictional engagement with each of said plates.

2. In a compressible pile a plurality of plates, means for communicating pressure to compact said plates and means engaging each of said. plates to loosen said plates when pressure is released.

In witness whereof, I have hereunto subscribed my name.

AUGUST W. DONOP. 

